Question
In: Statistics and Probability
A survey conducted at Chicago Public Schools (CPS) involving high school students on whether they had...
A survey conducted at Chicago Public Schools (CPS) involving high school students on whether they had participated in binged drinking during the past month. Binge drinking was defined as 5 or more drinks in a row on one or more of the past 30 days.
|
Number who identified as having participated in Binge Drinking. |
72 |
|
Total participants |
567 |
a. From the sample data is there evidence that the proportion of students who participate in binge drinking is greater than 10%? Write a null and alternative hypothesis and perform an appropriate significance test using
b. Construct a 90% Confidence Interval for the population proportion. Does it support the same conclusion as in part a? Explain.
Solutions
orchestra answered 2 years agoRelated Solutions
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High school graduates: Approximately 78% of freshmen entering public high schools in the United States in...
High school graduates: Approximately
78%
of freshmen entering public high schools in the United States
in
2005
graduated with their class in
2009
. A random sample of
128
freshmen is chosen. Use
(a)Find the mean
μp
.(b)Find the standard deviation
σp
.
(c)Find the probability that less than
91%
of freshmen in the sample graduated.
(d)Find the probability that between
68%
and
83%
of freshmen in the sample graduated.
(e)Find the probability that more than
68%
of freshmen in...
High school graduates: Approximately 74% of freshmen entering public high schools in the United States in...
High school graduates: Approximately
74%
of freshmen entering public high schools in the United States
in
2005
graduated with their class in
2009
. A random sample of
175
freshmen is chosen. Use Cumulative Normal Distribution Table as
needed. Round your answers to at least four decimal places if
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(a)Find the mean
μp
.
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μp
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(b)Find the standard deviation
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